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I2C General Purpose I/O Expanders

NXP Semiconductors I²C General Purpose I/O Expanders provide GPIO expansion for most microprocessor families, allowing designers to save the GPIOs on microprocessors for other important functions. Designers can utilize the microprocessor GPIOs for important functions and use the I/O expander for other duties, including system monitoring, ACPI power switches, sensors, push buttons, LEDs, fans, and more. NXP GPIO expanders are ideal for adding fan and LED control to systems. They are also ideal for monitoring system functions and accepting push-button inputs.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS
	Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater PCA9509PGM,125 NXP Semiconductors 1: $1.63 1,497In Stock 8,000Expected 14/1/2027	Mfr. Part No. PCA9509PGM,125 Mouser Part No 771-PCA9509PGM,125	NXP Semiconductors	Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater Learn More about NXP Semiconductors nxp pca9509 repeater	Datasheet	1,497In Stock 8,000Expected 14/1/2027	Cut Tape $1.63 $1.17 $1.05 $0.928 View Reel $0.748 $0.866 $0.83 $0.804 $0.768 $0.748 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in TSSOP24 package PCA9535APW,118 NXP Semiconductors 1: $2.84 92In Stock 12,500Expected 29/10/2026	Mfr. Part No. PCA9535APW,118 Mouser Part No 771-PCA9535APW,118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	92In Stock 12,500Expected 29/10/2026	Cut Tape $2.84 $2.09 $1.90 $1.70 View Reel $1.48 $1.60 $1.55 $1.48 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address than PCA9554C in HVQFN16 package PCA9554BBSHP NXP Semiconductors 1: $2.31 175In Stock 60,000On Order	Mfr. Part No. PCA9554BBSHP Mouser Part No 771-PCA9554BBSHP	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address than PCA9554C in HVQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	175In Stock 60,000On Order On Order Ship Dates Mfr. No: PCA9554BBSHP Stock: 175 Can Dispatch Immediately On Order: 6,000 Expected 21/12/2026 18,000 Expected 3/5/2027 36,000 Expected 10/5/2027 Factory Lead Time: 30 Weeks	Cut Tape $2.31 $1.70 $1.55 $1.37 View Reel $1.06 $1.29 $1.24 $1.23 $1.22 $1.06 MouseReel Available	Min.: 1 Mult.: 1 : 6,000
	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in X2QFN16 package PCAL6408AEX1Z NXP Semiconductors 1: $2.07 2,510In Stock 15,000Expected 22/11/2027	Mfr. Part No. PCAL6408AEX1Z Mouser Part No 771-PCAL6408AEX1Z	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in X2QFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	2,510In Stock 15,000Expected 22/11/2027	Cut Tape $2.07 $1.59 $1.37 $1.22 View Reel $1.02 $1.15 $1.09 $1.02 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in XQFN16 package PCA6408AHKX NXP Semiconductors 1: $1.66 244,985On Order	Mfr. Part No. PCA6408AHKX Mouser Part No 771-PCA6408AHKX	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in XQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	244,985On Order On Order Ship Dates Mfr. No: PCA6408AHKX Stock: 0 On Order: 72,985 Expected 31/5/2027 68,000 Expected 6/9/2027 104,000 Expected 22/11/2027 Factory Lead Time: 30 Weeks	Cut Tape $1.66 $1.20 $1.09 $0.96 View Reel $0.782 $0.90 $0.864 $0.835 $0.821 $0.782 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP24 package PCA9539APW,118 NXP Semiconductors 1: $2.60 16,179On Order	Mfr. Part No. PCA9539APW,118 Mouser Part No 771-PCA9539APW,118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	16,179On Order On Order Ship Dates Mfr. No: PCA9539APW,118 Stock: 0 On Order: 1,179 Expected 12/1/2027 15,000 Expected 14/1/2027 Factory Lead Time: 30 Weeks	Cut Tape $2.60 $1.92 $1.74 $1.55 View Reel $1.34 $1.48 $1.44 $1.34 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
	Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater PCA9509PDP,118 NXP Semiconductors 1: $2.64 2,274Expected 30/11/2026	Mfr. Part No. PCA9509PDP,118 Mouser Part No 771-PCA9509PDP,118	NXP Semiconductors	Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater Learn More about NXP Semiconductors nxp pca9509 repeater	Datasheet	2,274Expected 30/11/2026	Cut Tape $2.64 $1.93 $1.75 $1.56 View Reel $1.29 $1.47 $1.41 $1.29 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in TSSOP24 package PCA9555APW,118 NXP Semiconductors 1: $2.65 9,995Expected 22/2/2027	Mfr. Part No. PCA9555APW,118 Mouser Part No 771-PCA9555APW118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	9,995Expected 22/2/2027	Cut Tape $2.65 $2.01 $1.78 $1.59 View Reel $1.37 $1.50 $1.44 $1.37 MouseReel Available	Min.: 1 Mult.: 1 : 2,500